Supporting means for artificial silk



Au 29, 1933. F. PASCHKE Er AL I SUPPORTING MEANS FOR ARTIFICIAL SILK Filed Oct. 3, 1951 Fig 3.

Patented Aug. 29, 1933 UNITED STATES PATENT OFFICE SUPPORTING MEANS FOR. ARTIFICIAL SILK Fritz Paschke, Cologne, and Peter Franzen,

Cologne Nippes, Germany,

assignors to Glanzstoff-Courtaulds G. m. b. H., Cologne- Merheim, Germany, a German company Application October 3, 1931, Serial No. 566,718, and in Germany October 23, 1930 9 Claims. (Cl. 242-118) This invention relates to apparatus for use in the production of artificial silk. In the production of artificial silk, after the spinning process,

the subsequent treatment of the silk with the exception of treatment in the hank, is either carried out on the bobbin itself, or the lap of silk thread spun on to the bobbin or tubular support is taken off from the latter and is subjected to the subsequent treatment without any support. 10 Considerable difficulties, however, arise in 'withdrawing the lap of silk thread from the bobbin or other support without damaging the individual fibres, and for this purpose a number of specially constructed bobbins with a variable circumference have been tried. These forms of construction, however, have been too complicated and expensive to be successful in practice.

According to the present invention, the artificial silk is spun upon a continuous (i. e. unsplit) or collapsible sleeve or tube between which and a rigid bobbin is arranged a second sleeve of rigid material but split so as to be capable of contraction and which second sleeve is easily withdrawable from the bobbin together with the collapsible sleeve with the thread winding on it.

This sleeve of rigid material is withdrawn from the bobbin together with the collapsible sleeve and the lap of thread, and then the rigid sleeve can be contracted and thus easily removed and subsequently the collapsible sleeve is collapsed (i. e. folded up) inside the lap of thread and may be withdrawn from the lap without damaging the individual fibres. The collapsible sleeve is conveniently of rubber. The lap of thread thus withdrawn can easily be subsequently treated, for example, in a similar way to the treatment of spinning cakes in the centrifugal process. However, if desired, the collapsible sleeve need not be withdrawn from the lap of silk thread but may remain in the lap during the subsequent treatment of the silk, in which case the sleeve is preferably perforated. The sleeve may be provided with suitable projections or a flange which can be used as a grip.

The advantage of these tubular sleeves or supports consists in the fact that much thicker laps of thread may be spun on to them. In the method of subsequent treatment of the silk on the bobbin itself, this was not possible since uniform subsequent treatment and particularly drying under uniform tension of thick and tight laps of thread on the bobbin involves very great difficulties. The lap of thread, however, withdrawn from the support becomes looser and may be treated subsequently and dried very much better than is otherwise possible.

In order that the invention may be clearly understood and readily carried into effect, it will now be described by way of example with reference to the accompanying drawing, in which:-

Figure 1 is a side sectional elevation of a bobbin provided with asleeve in accordance with the invention.

Figure 2 is a sectional plan on the line 11-11 5 of Figure 1, and

Figures 3, 4 and 5 are perspective views of the separate parts of the arrangement shown in Figure 1.

a is the bobbin fixed on the spinning shaft a b is a rigid sleeve of thin sheet metal, or the like, generally of cylindrical shape but split into two parts longitudinally, these parts being .connected together resiliently attheir upper ends by a springy strip which forms a handle 0. The support I) is passed over the body of the bobbin a on the shaft of the spinning machine, this body being smooth except for two opposite projections d in the form of keysover which the slots'between the two halves of the tubular support I) fit. By this means, the tubular support I) is securely connected with the body of the bobbin a and makes a driving connection with it. A rubber tube or sleeve e is drawn over the two-part support b and the latter then placed over the bobbin, with resulting tensioning of the rubber sleeve e: the lap of silk thread is spun on to the outer surface .of the rubber sleeve e. This form of construction enables the silk to be removed easily and conveniently. The two-part support b with the rubber sleeve e and the silk spun on the latter (the silk is not shown in the drawing) is withdrawn from the body of the bobbin a by meansof the handle 0, whereupon first of all the two-part support I) may be contracted and withdrawn and the rubber sleeve c then removed from the inside of the silk. The removable structure is comparatively rigid in itself and may therefore be easily withdrawn without entangling or damaging the silk threads.

The invention is not limited to the particular form of construction set out above as a support consisting of more than two'parts, for example, three parts, 'could be employed, and instead of the rubber sleeve, a thin collapsible sleeve of 105 felt or textile or like material could be employed.

We claim:-

1. Apparatus for use in the production of artificial silk, comprising in combination a bobbin,

a sleeve of rigid material split so as to be capable 11 of contraction and fitting over said bobbin, and a second sleeve of collapsible material fitting over said contractible sleeve, the silk thread being spun onto said second sleeve and said contractible sleeve being easily withdrawable from the bobbin together with said second sleeve and the thread winding on it.

2.. Apparatus for use in the production of artificial silk, comprising in combination a bobbin, a contractible sleeve of rigid material fitting over said bobbin, and a second sleeve of collapsible material fitting over said contractible sleeve, the silk thread being spun onto said second sleeve and said contractible sleeve being easily withdrawable from the bobbin together with said second sleeve and the thread winding on it.

3. Apparatus for use in the production of artificial silk, comprising in combination a bobbin, a sleeve of rigid material longitudinally subdivided into two parts, means resiliently connecting together the parts of said sub-divided sleeve which sleeve fits over said bobbin, and a second sleeve of collapsible material fitting over said sub-divided sleeve, the silk thread being spun onto said second sleeve and said subdivided sleeve being easily withdrawable from the bobbin together with said second sleeve and the thread winding on it.

4. Apparatus for use in the production of artificial silk, comprising in combination a bobbin, a sleeve of rigid material longitudinally divided into two parts a resilient strip connecting said parts together at one end and forming a handle, said sleeve fitting over said bobbin, and a second sleeve of collapsible material fitting over said divided sleeve, the silk thread being spun onto said second sleeve-and said divided sleeve being easily withdrawable from the bobbin together with said second sleeve and the thread winding on it.

5. Apparatus for use in the production of artificial silk, comprising in combination a bobbin,-

a contractible sleeve of rigid material fitting over said bobbin, means connecting said second sleeve to said bobbin, and a second sleeve of collapsible material fitting over said contractible sleeve, the silk thread being spun onto said second sleeve and said contractible sleeve being easily withdrawable from the bobbin together with said second sleeve and the thread winding on it.

6. Apparatus for use in the production of artificial silk, comprising in combination a bobbin, a contractible sleeve of rigid material fitting over said bobbin, and a second sleeve of resilient material fitting over said contractible sleeve, the silk thread being spun on to said second sleeve and said contractible sleeve being easily withdrawable from the bobbin together with said second sleeve and the thread winding on it.

7. Apparatus for use in the production of artificial silk, comprising in combination a bobbin, a contractible sleeve of rigid material fitting over said bobbin, and a second sleeve fitting over said contractible sleeve, said second sleeve 4 being of rubber, the silk thread being spun on to said rubber sleeve and said contractible sleeve 95 being easily withdrawable from the bobbin together with said rubber sleeve and the thread winding on it.

8. Apparatus for use in the production of artificial silk, comprising in combination a bobbin, a sleeve of rigid material split longitudinally and fitting over said bobbin projection on said bobbin entering the split in said sleeve and second sleeve of. collapsible material fitting over said split sleeve, the silk thread being spun onto said second sleeve and said split sleeve being easily withdrawable from the bobbin together with said second sleeve and the thread winding on it.

9. Apparatus for use in the production of artificial silk, comprising in combination a bobbin, a sleeve of rigid material longitudinally subdivided into two parts, an arched strip resiliently connecting said parts together at one end and forming a handle, and projections on said bobbin entering spaces between said parts said sleeve fitting over said bobbin, and a second sleeve of collapsible material fitting over said divided sleeve, the silk thread being spun on to said rubber sleeve and said sub-divided sleeve being easily withdrawable from the bobbin together with said 120 rubber sleeve and the thread winding on it.

FRITZ PASCHKE. PET. FRANZEN. 

